Meiosis

In humans, the haploid number of chromosomes is ____.

• 23

• 46

• 69

• 92

Tags

NGSS.HS-LS3-1

Which of the following is the best definition for MEIOSIS?

• the process of two haploid cells uniting

• the counting of chromosomes within a diploid cell

• a two-step process that reduces the number of chromosomes in half such that there is only one copy of all the chromosomes

• the equational division of a cell into two identical copies

In which stage of MEIOSIS does crossing over occur? (The exchange of genetic material between chromosomes in a tetrad.)

• Anaphase I

• Metaphase I

• Prophase I

• Telophase I

In Anaphase I, the _________ are separated by the pulling of the spindle fibers to opposite poles of the cell.

• homologous pairs of chromosomes

• sister chromatids

• centromeres

• centrosomes

Tags

NGSS.HS-LS1-4

Check all of the following that DO occur during Telophase I and cytokinesis.

• The separated homologous chromosomes are at opposite poles of the cell.

• The cell divides in two.

• The chromosomes do not uncoil, since they are getting ready for Meiosis II.

• Sister chromatids are pulled away from each other.

Tags

NGSS.HS-LS3-2

Which part of MEIOSIS is identical to MITOSIS?

• Meiosis I

• Meiosis II

The products of MEIOSIS have _______ number of chromosomes.

• haploid

• diploid

THIS IMAGE SHOWS WHAT IS HAPPENING WITH THE CHROMOSOMES?

• NON- DISJUNCTION

• METAPHASE

• TELOPHASE

• CROSSING OVER

Tags

NGSS.HS-LS3-1

How many TOTAL steps are there in the process of meiosis?

• 2

• 4

• 8

• 16

The stage of meiosis where crossing over or the exchange of genetic information happens between pairs of chromosomes

• Prophase II

• Telophase I

• Metaphase II

• Prophase I

Tags

NGSS.HS-LS3-2